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MAF, male. Subchondral fracture (black arrow) in the anterior-superior portion of the left femoral head. It is characterized by a linear trace with low serpiginous signal parallel to the articular surface in the coronal T1 (a), T2 with fat saturation in the coronal (b) and sagittal (c) images. Extensive bone marrow edema (*) and joint effusion (white arrow).
